Draft-rigging for railway-cars.



JfF. O'CONNOR. DRAFT mama FOR RAILWAY cans APPLICATlON FILED JULY 20.1916. l ,251,091 Patented Dec. 25, 1917.

INVEN TOR. WITNESSES: Jalmji'fl''mmax ATTORNEY I. F. OCONNOR.

DRAFT RIGGING FOR RAILWAY CARS.

APPLICATION man IULY 2051915.

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U N ITED STATES PATENT OFFICE.

JOHN F. O'CONNOR, OF CHICAGO, ILLINOIS, ASSIGNOR T WILLIAM H. MINER, 0F CRAZY, NEW YORK.

DEAFT-RIGGING FOR RAILWAY-CARS.-

Speciflcation'of Letters Patent.

Application filed July 20, 1916. Serial No. 110,267.

To all whom it may concern:

Bev it known that 1, JOHN F. OCoNNoR, a citizen of the United States, residing at Chicago,in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Draft-Rigging for Railway-Cars, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.)

My invention relates to improvements in draft rigging for railway cars.

.Onefof the objects of my invention is to provide etlicient draft rigging; A further object is to rovide a friction spring draft gear adapte to be employed inassociation with tandem draft rigging side castings.

In the drawings forming a part of this specification, Fi ure 1 is aside elevation, partly in vertical longitudinal section of a draft rigging embodying my invention. Fig. 2,15 0. horizontal section partly in top plan. Fig.-3- is a 37-3 of Fig. 1. Fig. iis a cross section takenon line 4-4 of Fig. 1. Fig. 5 is a perspective view of thefriction shelL'and Fig. 6 is a perspective view ofa section of the draft yoke.

Referring to the drawings, the numerals 7 7 indicate draft members or parts of the under-framing of the car to which the draft rigging is applied; 8-8 sideplates secured by suitable means, as, for instance, the rivets 9-9to the draft members. The draft plates are such as' are mployed in tandem spring draft rigging an l each of said plates is provided with a fIt it stop 10. a front limiting stop 11, a inir'r lo op 12. a roar limiting stop 13, and a'rca'r stop 14. The middle stops 12-]2 are deeper than the and stops 10 and 14, respectively. Between the draft members is mounted a draw bar 15 provided with the usual upper and lower shoulders 16 and 17, respectively. A draft yoke 18 is secured to the draw bar and con nccts the same to the draft gear 13'), which is mounted between the side plates. In tandem' spring draft rigginghone compression resisting unit is mounted in the front pocket 20 formed between the front stops and. the middle stops and another compression resisting unit is mounted in the rear pocket ,21 formed between the middle stops and cross section taken on linethe rear stops of the side plates. In the particular embodiment of my invention illustrated in the drawings, a friction compression resisting unit 22 is mounted in the front pocket and a. spring compression rosisting unit 23 is mounted in the roar pocket.

The friction compression resisting unit 22 comprises a shell 24: cylindrical shape having mounted therein the wedge 25, the annular-1y arranged friction shoes 2C26, the interposed anti-friction rollers Ii--27 and a plunger 2S'which rearwardly engages the friction'shoes is eX- tended through the rear opening of the fric-- tion shell and passing between the middle stops 1212 ofthc side castings, engages at its rear end the rear intermediate follower 29. i The wedge is provided at its forward end with a recess 30 to receive the nut 31 of the connecting bolt 32 which passes through the wedge and through theplunger the said connecting boltbcing provided at its rear end with a head 33 to engage it to the plun er. The rear end 34 of the friction shell IS, in normal position of the parts, seated against the center stop 12. A front follower 35 engages the wedge and in normal position is seated against the front stops 10. The spring compression resisting unit 23 mounted in the rear pocket 21, comprises the rear interu'lediate follower 29 and the rear follower 36. together with the springs 37 mounted between said followers. In normal position of the parts. the rear follower 36 engages against the rear stop shoulders 14. The compression resisting elements are incloscd within the yoke 18, the particular form illustrated in the drawing licingp twopart yoke or a yoke comprising two loops arranged side by side. The said loops are connected at their f'mwvard ends by the intercngaging hinge-forming parts 38-458 and are connected at their rear ends by the In y 39 passingthrough the lugs 40 upon the yoke. The upper and lower limbs 41 and 42 of the yoke, respectivcly. are provided each with a front iii-turned lug 43 and a spaced rear in-turned lug 44 providing a transverse groove 1-5 between the lugs. The inner portion of the lug 44 has a forwardly extending flange 4G inclosing a portion of the transverse groove 45. The rear portion of the friction shell is provided with a pref- Patented Dec. 25, 1917.

preferably of hollow,-

erably integral follower 47 having the upper and lower rearwardly extended flanges 48 and 49 respectively, which, together with the adjacent portions of the said follower, form a tongue adapted to enter an adjacent transverse groove to of the yoke.

At its forward end, the friction shell is provided with the upper and lower, prefer- .ably integral extensions 50 and 51 respectively, the flat ends of which extend transversely along the inner faces of the yoke limbs. Byrea'son of the tongue and groove structure provided upon the shell and yoke. the shell andyoke are held together on forward and rearward movement of the draft rigging. The yoke is provided with the lateral plates 5252 which, together with the limbs, form a head within which the butt 53 of the draw bar 15 is received and the limbs are also provided with the in-turned gibs 54 which engage against the draw bar shoulders 16 and 17. Onrearward movement of the draw bar, the yoke remains stationary, the draw bar sliding rearwardly therein, forcing" the frontfollower against the-wedge, which brings the friction shoes into operation, the rearward movement of the friction shoes being resisted through the medium of the plunger 28 by the spring compression resisting unit 23. The springs.

in rearward movement of the draw bar are held at their rear ends by the rear follower 36 through its engagement against the rear I end stops 14:. On forward movement of the drawbar, the yoke'is drawn forwardly, forcing the spring compression resisting unit into action, which, in turn, presses by means of the plunger, against the friction shoes and the yoke through its engagement with'the friction shell ,.draws the said shell forwardly, bringing the contained friction elements into compression resisting act1on,

the same beingheld'against forward movement by the front follower 35 which is stopped by the front stop shoulders 10 of the side plates. A space indicated 'at the 'numeral 55 in Figs. 1 and 2 of the drawing is provided between the rear intermediate follower 29 and the center stop 12, thus l' ()l'(f mg the springs to act against the frlction elements in forward movement. of the draw bar until the rear intermediate follower 29 comes into engagement with the center stops 12. The entire draft gear is supported in its position between the draft members and stops by'means of the tie plate 56 which is suitably secured to the draft members 7 as, for instance, by the bolts 57.

Thus I have provided a high capacity friction draft gear in which a short friction shell may be employed and all the parts of whiclr may be. assembled with tandem draft rigging side plates so that cars provided with such side plates may have substituted therein witlioutany change of stop and rear pockets, a compression resisting unit in-each of said pockets, a yoke to con-' nect said units to a draw bar, one of said units including a shell, the yoke and shell being provided with means to prevent their relative, longitudinal movement. 2. In a draft ri ging for railway cars, in' combination, tandem draft rigging side plates, a friction compression resisting unit in the one pocket thereof, a spring compression resisting unit in the other pocket thereof, a yoke to engage both of said units to a draw bar, the friction compression resisting unit including a shell, the said shell rel tive longitudinal movement therewith.

3. In a draft rig ing for railway cars, 'incombination, side plates having end and middle stops, a friction compression resist- ,ing unit between the middle stops and one set of end stops, :1 spring com ressionre- W sisting unit between the midd e stop and the other set of end stops, a yoke to 0on nect both of said units to a. draw bar, the friction compression resisting unit includin a shell, he said shell being rigidly engage to the yoke. 4. In a draft rigging for railway cars, in combination, side plates having end and middle stops, a friction compression resisting unit between the middle stops andone set of end stops, a spring compression resisting unit between the middle stops and the other set of end stops, a yoke to connect both of said units to a draw bar, the friction compression resisting unit including a shell, the said shell being rigidly and detachably engaged to the yoke.

'In a. draft-rigging for railway cars, the combination with tandem draft rigging side plates, of a friction shell and friction elements within the shell, springs and followers and a yoke to connect said parts to 'a draw I bar, the friction shell being seated between the middle stops and one set of end stops of the side Plates, the springs being seated between the middle Stops and the other end stops of the side plates, a plunger extending between the springs and the friction ele- 12o ments, said plunger assing between the middle stops of the Sid plates.

6. In a draft rigging for railway cars, the combination with side plates having end and middle stops, of a draw bar, a yoke connected thereto, tandem arranged sets of compression resisting elements within the yoke, one set of compression resisting elements com rising a shell and friction parts within the shell, the other set comprising springs and followers, 30

'60 ous y on pulling action of the rlgging.

10. In a draft rigging for railway cars, in combination, side plates having end and middle stops, a draw bar, a yoke slidingly middle stops, a draw bar, a yoke connected to the draw bar, two sets of compression resisting elements in tandem arrangement within the yoke, one set including a frictibn shell and friction elements within the shell, a plunger extending longitudinall f In said friction elementswithin the she l a d operatively engaging the other compression resisting elements.

8. In a draft rigging for railway cars, in

:0 combination, side plates having front, rear and middle stops, a draw bar, a yoke connected thereto,- two sets of compression resisting elements in tandem arrangement within the yoke, the front set comprising a shell mounted between the front end sto s and the middle stops of the side plates, t e

.rear set comprising followers and springs between the followers, all mounted between the middle stops and the rear end stops, a plunger-passing between the middle stops and engaging the friction elements at one end and the spring elements at the other end, the yoke and the shell being held together against relative longitudinal movement.

9. In a draft rigging for railway cars, in combination, side plates having end and middle stops forming front and rear pockets between the side lates, a yoke mounted be- 40 tween said side pliites, a friction shell in one of said pockets, springs in the other of said pockets, the friction shell having friction elements therein and a plungerextending between said elements and the s ring elements, the friction shell .and yo e having inter-engaging means to prevent "their relative, longitudinal movement, the oke and shell being stationary in buffm actlon of the rig ing and moving forwar yi simultane verse tongues and tending upper and lower shoulders, friction connected to the draw bar, a friction compression resisting element between the front end stops and the middle stops of the side plates, spring compression resisting elements between the middle stops and the rear end stops'of the side plates, the friction' resisting elements comprising a shell and friction elements within the shell, the shell and yoke being provided with transooves to hold the yoke and shell against re ative, longitudinal movement.

11. In a draft rigging for railwa cars,

the combination with a tandem yoke aving front and rear pockets, of a friction mechanim mounted in one of said pockets, saidfriction mechanism including afriction shell interlocked with the yoke to prevent relative longitudinal movement thercbetween, a spring mounted in the other pocket of said yoke, followers in aid ockets, and stops 00- operating with said fo lowers.

12. In a draft rigging for railway cars, the combination with tandem stop castings, of a spring, a friction mechanism including a frictlon shell, the spring and friction mechanism being arranged in tandem, and a two art yoke within which said spring and friction mechanism are mounted, said oke and shell having inter-engaging shoui ders arrailiiged to move the shell in unison withthey v 13. In a draft rigging, the combination with tandem arranged stop castings, of a short friction shell having transversely exelements cooperable with said shell, a two part yoke within which said shell is mounted, the parts of said yoke when assembled having transversely extendin grooves on Y the inner faces of the arms t ereof within which are received said shoulders, whereby the yoke and shell move in unison, 3 spring mounted within said yoke, and a thr t member, extending from the friction elements to said spring. a V In witness that I claim the fore havehereunto subscribed my name day of July, 1916. I a g JOHN F. OOONNOR. Witnesses: i

ELIZABETH M. Barri,

Loom Hrooms. 

